JANTX1N4990DUS

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Diodes - Zener - Single

The JANTX1N4990DUS is a single Zener diode developed by Semtech Corporation. It features a maximum reverse voltage rating of 6V and a maximum power dissipation of 500mW. This device is ideal for applications that require a low-cost, yet reliable Zener diode.

Application Fields

The JANTX1N4990DUS is designed primarily for consumer applications, where reliable DC voltage regulation is needed. It can be used in automotive, telecommunications, and commercial applications that require surge protection and voltage regulation.

The JANTX1N4990DUS also has a wide range of applications in consumer electronics. It is ideal for laptop chargers, active speakers, LCD displays, power adapters and switchmode power supplies. It can also be used in high-speed data lines and embedded systems.

Working Principle

The working principle of the JANTX1N4990DUS is based on a Zener diode, which is a two-terminal semiconductor that is used to regulate the voltage and ensure a stable output. A departure from the normal “forward bias” behavior is observed when a reverse bias voltage is applied across the device, causing a breakdown in the junction of the diode. This reverse voltage creates a flow of electrons, which conducts current in the opposite direction of the normal diode connection, and causes the diode to regulate the output voltage.

When the device is in a reverse-bias configuration, the voltage applied across the device is less than the breakdown voltage. At this point, few electrons will conduct current, and the diode will remain off. When the reverse bias voltage exceeds the breakdown voltage, the diode will start to conduct, allowing current to flow in the opposite direction, and regulating the output voltage.

Conclusion

The JANTX1N4990DUS is a low-cost, reliable Zener diode exhibiting a maximum reverse voltage rating of 6V and a maximum power dissipation of 500mW. It is ideally suited for a variety of consumer applications, including automotive, telecommunications, commercial, laptop chargers, active speakers, LCD displays, power adapters, switchmode power supplies, high-speed data lines and embedded systems. The working principle of the diode is based on breakdown of the Zener junction when a reverse-bias voltage is applied.

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